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Kazeer [188]
3 years ago
12

Why does every plant cell have a nucleus

Chemistry
2 answers:
Phantasy [73]3 years ago
7 0
Plant cells are eukaryotic cells and they all have a nucleus and DNA is stored in the nucleus and copied during replication.
Lena [83]3 years ago
3 0
Every plant cell has a nucleus because a nucleus controls the cell's main <span>activities.</span>
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5. Didderent betwen group and period.​
Ronch [10]
A group goes vertically and a period goes horizontally.

(a group goes down and a period goes across)
3 0
3 years ago
Which is a characteristic of nuclear fission
icang [17]
1. A heavy nucleus (U235 or Pu239), when bombarded by slow moving neutrons, split into two
or more nuclei.
2. Two or more neutrons are produced by fission of each nucleus.
3. Huge amount of energy is produced as a result of nuclear fission.
4. All the fission fragments are radioactive, giving off β and radiations.
<span>5. The atomic weights of fission products range from about </span>70 to 160.
6. The nuclear chain reactions can be controlled and maintained steadily by absorbing a
desired number of neutrons. This process is used in nuclear reactor.
<span>7. All the fission reactions are self-propagating chain-reactions because fission products contain </span>
neutrons (secondary neutrons) which further cause fission in other nuclei.
8. Every secondary neutron, released in the fission process, does not strike a nucleus, some
escape into air and hence a chain reaction cannot be maintained.
<span>9. The number of neutrons, resulting from a single fission, is known as the multiplication factor. </span>
When the multiplication factor is less than 1, a chain reaction does not take place.
<span>10. The control of chain reaction is necessary in order to maintain a steady reaction. This is </span>
carried out by absorbing a desired number of neutron by employing materials like
percentage of Cd, B or steel.
11. In a nuclear reactor, the multifactor is one. This is achieved by proper arrangement of
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3 0
3 years ago
Read 2 more answers
1. What element is a metalloid in group 3?
denis23 [38]

Answer:

1.The metalloids; boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), polonium (Po) and astatine (At) are the elements found along the step like line between metals and non-metals of the periodic table.

2.hydrogen

The elements generally classified as nonmetals include one element in group 1 (hydrogen);

3.element iron

The element iron is in group 8, and therefore has two or three apparent valence electrons.

8 0
3 years ago
Why is the average air temperature of Makassar warmer than the average air
Brrunno [24]

Answer:

becuase of the sun

in different places some places would be cold

8 0
3 years ago
On a violin, the highest note Mandy can play is an A-note, which produces a sound wave with a high frequency. The lowest note sh
koban [17]

Answer:

the g note moves slower then the a note

7 0
3 years ago
Read 2 more answers
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